How to assemble the jacket and the inner cylinder
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How to assemble the jacket and the inner cylinder? Seeking expert advice based on the diagram below
Buy a sleeve body and assemble it directly. If you want to communicate, please add QQ87412851
The sleeve body has two flanged areas; this pipe should be welded at the back, I guess
This post was last edited by shinaijian on 2017-6-10 at 13:12. First, the flanging around the central hole in the jacket head must be properly done (either by the head manufacturing factory or through manual heating and flanging at the factory), after which it is assembled and welded to the jacket body, followed by non-destructive testing. Next, the inner tube and the lower head of the inner tube are assembled and welded together, with non-destructive testing conducted as well. Finally, the jacket assembly and the inner tube assembly are put together, and the small holes are heated and flanged. If the local pressure testing facility is strict, then the jacket assembly will be added later; first, the upper head of the inner cylinder is installed and pressure-tested, and only after the inner cylinder passes the pressure test is the jacket assembly assembled.
The take over and its flange are welded after being fitted into the inner cylinder and jacket...
So, for those 2 holes in the inner cylinder, should they be opened first or not? If they are opened, it won’t be possible to perform pressure testing on the inner cylinder. They should not be opened yet. After the pressure testing of the inner cylinder is successful, then the jacket can be installed, and afterwards those 2 holes in the inner cylinder can be dealt with during the pressure testing
Do not make holes yet; wait until the inner cylinder has been inspected, install the jacket, and then make holes to weld in the connections.
Do not make holes yet; wait until the inner cylinder has been inspected, install the jacket, and then make holes to weld in the connections.
The corrosion margin for the inner cylinder of this tank is 2, while that for the jacket is 1. When performing strength calculations, the corrosion margin for the inner cylinder is taken into account based on several values